I happen to think that PHI may get suitors for their #21 and #28. The current conventional wisdom is that they are in the market for WR, RB, TE, possibly DB, and some teams see value for themselves in having 2 latter picks in the 1st.
They basically have a decent roster IMO, and a "skill" player they think exceptional can help them. IMO.
Mack at 21, 28 - even higher, seems to me to be a solid pick. Having a good, all-around center is valuable.
I'd be surprised if they went after Peters.